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Search Again :: Adv Search 632 results in 0.001s
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  • ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…

    ... with a multimeter. Even the oscilloscope does not help much (sometimes ...
    Jose_Leandro Jose_Leandro April 2011 Hardware
  • Spectrum - Show in London area, April 2012Hello Folks, we have been already discussing in another thread. Here I simply want check the interest.So the question is easy: If we will organize a …

    ... PWM to make an analogue waveform... the Apple 2 has enough ...
    Winston Winston May 2011 Sinclair Miscellaneous
  • Spectrum - Show in London area, April 2012Hello Folks, we have been already discussing in another thread. Here I simply want check the interest.So the question is easy: If we will organize a …

    ... PWM to make an analogue waveform... the Apple 2 has enough ...
    ccowley ccowley May 2011 Sinclair Miscellaneous
  • Interface 1 - a proper fix?Hi everybody, Over the last few days I've been looking at Interface 1's again. I keep coming up against the "spins forever" problem, i.e. writing to…

    ... the read line on an oscilloscope be a good idea?
    FrankT FrankT May 2011 Hardware
  • +3 Drive problemsHi all, I'm currently trying to get the drives on my three +3 machines working, I have replacement drive belts and have cleaned and replaced the bel…

    ... to fix - even with an oscilloscope it can take forever - you ...
    skel57 skel57 May 2011 Hardware
  • Grey+2 displays cyan instad og bright 0 whitehere's a weird one one of my grey+2's displays cyan instead of white, yet bright 1 white is ok I swapped a ULA out of a machine that is ok and it's…

    Do you have an oscilloscope with an adjustable trigger delay?< ...
    guesser guesser May 2011 Hardware
  • Question about wiring up ethernet at homeWell, since WoS is the best forum I know for technical folk, I wondered if I could get a sanity check on my wiring plan for laying some ethernet cabl…

    ... tends to give the same waveform on both wires of the ...
    Winston Winston June 2011 Chit chat
  • 128K blues, part +2: picture and tape driveI recently purchased an original (grey) +2 which sadly seems not to be fully working. The computer powers up but there is no way to obtain a stable p…

    ... gate array pins with an oscilloscope to check that they [I ...
    guesser guesser June 2011 Hardware
  • 128K blues, part +2: picture and tape driveI recently purchased an original (grey) +2 which sadly seems not to be fully working. The computer powers up but there is no way to obtain a stable p…

    ... gate array pins with an oscilloscope to check that they [I ...
    Alessandro Grussu Alessandro Grussu June 2011 Hardware
  • did anyone say beeper?some people where asking for a beeper demo... well i don't know anything about demo making so for now i've put together this musicdisk with some old …

    ... with is a smoothed-out waveform with a maximum frequency of ...
    kphair kphair June 2011 Announcements
  • Souping up my Spectrum+ 128k ToastrackI wrote a small piece on the various things I've been doing to my ZX Spectrum+ 128k toastrack, primarily getting it working with the bright output an…

    ... circuit to see what the waveform will likely be like from ... while back. Here's the waveform of BEEP 1,1 :
    waveform of the recorded music. The ...
    Winston Winston September 2011 Hardware
  • Need help with tzxingI recently got a copy of this Polish text game: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0006622[/url] I can't make a tzx of it howeve…

    Hi Ralf,

    The Waveform looks deformed, what is probably ...
    Andrew Barker Andrew Barker October 2011 MIA/STP/SDP
  • mp3 to wav converteri have googled for one, and there are loads of free ones. any suggestions from a wosser on a nice simple one. thanks.

    ... is decoded to provide the waveform, which is then losslessly encoded ...
    JamesW JamesW October 2011 Chit chat
  • which zx-spectrum games uses 1bit sound samples?hi! I'm looking for zx-spectrum games using 1bit sound samples. Compairing with msx, which has far less games available than zx-spectrum, there are f…

    ... some mucking about with an oscilloscope or a lot of trial ...
    Matt_B Matt_B October 2011 Games
  • Need help with tzxing once again :)You people helped me so much in this thread witch a custom loader: [url]http://www.worldofspectrum.org/forums/showthread.php?t=36109[/url] Maybe we…

    ... allowed you to select a waveform block and run different things ...
    Andrew Barker Andrew Barker October 2011 MIA/STP/SDP
  • Pac-Man EmulatorMy Pac-Man Emulator for the Spectrum +2A/+3 is now available for download from: [url]http://simonowen.com/spectrum/pacemuzx/[/url] You'll need to su…

    ... use of the original sound waveform data in the ROMs as ...
    obo obo November 2011 Brand new software
  • Pac-Man EmulatorMy Pac-Man Emulator for the Spectrum +2A/+3 is now available for download from: [url]http://simonowen.com/spectrum/pacemuzx/[/url] You'll need to su…

    ... use of the original sound waveform data in the ROMs as ...
    na_th_an na_th_an November 2011 Brand new software
  • ZX81 Dark screen, could it be the ULA?Trying to get a ZX81 going for a mate of mine, already replaced the membrane (Cheers Rich!) but now its the old "very dark screen" problem, probably …

    ... up your street - veroboard and oscilloscope porn. And something to do ...
    ccowley ccowley December 2011 Chit chat
  • Spectrum 48K - upper memory MIAI have recently acquired a ZX Spectrum which, according to the sticker on the bottom, should be a 48K model. It's an Issue 3 board, with upper memory…

    ... be informative to use an oscilloscope to inspect the control and ...
    Zorn Zorn February 2012 Hardware
  • 128K heatsink no color in composite video and bad antenna outputI am currently repairing a ZX Spectrum 128K heatsink model. It gives no colors on composite video output, and very bad antenna output. I opened it a…

    ... I'll connect an old oscilloscope this week to visually check ...
    bverstee bverstee February 2012 Hardware
  • Colour blocks on displayHi all, I have just acquired another Sinclair product, my first one being a C5, it's a 48K ZX Spectrum. It shows colour blocks on the display when p…

    ... more useful to use an oscilloscope to see whether it's ...
    Zorn Zorn February 2012 Hardware
  • 128K heatsink no color in composite video and bad antenna outputI am currently repairing a ZX Spectrum 128K heatsink model. It gives no colors on composite video output, and very bad antenna output. I opened it a…

    Really you need to have a look with an oscilloscope otherwise you're basically reduced to guesswork.

    trigger it with the sync signal and see what signals you have in and out of the TEA2000.
    guesser guesser February 2012 Hardware
  • MB02 picsI got an original MB02 from someone to fix, and of course I made some pics to share (click for magnification): [URL="http://benophetinternet.nl/hobb…

    ... control bus lines with an oscilloscope while ZX is on and ...
    ingo ingo February 2012 Hardware
  • ZX Spectrum 128K composite video fixes in 1 documentI just finished my document with video fixes and improvements for all ZX Spectrum 128K models. Download it here: [URL="http://benophetinternet.nl/ho…

    ... you have access to an oscilloscope? That would be the easiest ...
    guesser guesser February 2012 Hardware
  • converting mp3 to zx importfile.is it possible?Hi peeps I am just looking through old threads and browsing through music tools on the zx in particular converting or creating ,what i am looking for…

    ... C.
    0F9h 1 Set waveform effect (like 'W' in a ... command)
    0FAh 1 Set waveform period (like 'X' in a ...
    jammajup jammajup March 2012 Development
  • 48K Issue 3, noisy display.Has anyone here experienced and been able to resolve a problem that looks like this: [URL="http://drizzle.zigg.net/ZX/ZX106-display.jpg"]Photogra…

    ... it more methodically with an oscilloscope probe.

    Below is ...
    Zorn Zorn March 2012 Hardware
  • Music cassettesWas there ever a utility on the Spectrum which when you to play an audio cassette in the player enabled the loading border stripes 'move to the music…

    ... to the subject:

    "Oscilloscope Speccy Program"
    [url]http ...
    zxbruno zxbruno March 2012 Sinclair Miscellaneous
  • 4116 SRAM replacement (and ULA timings).As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to re…

    ... and 6C ULA with my oscilloscope. Picking up where addresses change ...
    Zorn Zorn March 2012 Hardware
  • Microdrive units with weak (not dead) ULAs...Hi everybody, I've got a Microdrive unit here. It didn't work. It does now (actually, it was the ribbon had broken and the ground had lost contact, …

    ... , and see what the output waveform and voltages are looking like ...
    Winston Winston March 2012 Hardware
  • 48k Speccy chucks a wobblerI've got a problem with my rubber keyed 48k speccy. When it is first switched on everything is fine but after a couple of minutes the picture on scr…

    ... ideally watch them with an oscilloscope to see whether something such ...
    Zorn Zorn March 2012 Hardware
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    harriusherbartio on 11:01AM
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    Renegade on April 21

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